Here in the US, I've never seen a slip with anything other than a 120v connection. And I'm pretty sure you'd pop circuits like crazy if more than a few boats on

Here in the US, I've never seen a slip with anything other than a 120v connection. And I'm pretty sure you'd pop circuits like crazy if more than a few boats on a dock tried to draw the full amperage. It makes more sense in Europe where you already have 240v. But the marinas here just aren't set up for this.